Dish washer

Abstract

A dish washer is disclosed. The dish washer has improved washing efficiency while being constructed in a compact structure. A general dish washer is an apparatus that injects wash water to dishes so as to wash the dishes, and dries and / or sterilizes the washed dishes. The washer according to the present invention includes a filter unit (170) filtering at least some of the wash water injected form a tub (1), fallen downward, and directed to a collection part of sump (20).

Description

TECHNICAL FIELD[0001]The present invention relates to a dish washer, and more particularly, to a dish washer having improved washing efficiency while being constructed in a compact structure. A general dish washer is an apparatus that injects wash water to dishes so as to wash the dishes, and dries and / or sterilizes the washed dishes.BACKGROUND ART[0002]FIG. 1 is a view schematically illustrating the whole construction of a conventional dish washer, FIG. 2 is an exploded perspective view fully illustrating a drive unit of the dish washer shown in FIG. 1, FIG. 3 is a top view illustrating a flow channel structure of a filter housing shown in FIG. 2, and FIG. 4 is a sectional view illustrating the flow of wash water in the drive unit shown in FIG. 2 during a washing operation.[0003]FIG. 5 is a top view illustrating the flow of wash water in the filter housing shown in FIG. 2 during a washing operation, and FIG. 6 is a top view illustrating the flow of wash water in the filter housing ...

AI Technical Summary

Benefits of technology

The dishwasher with the present invention has several technical effects. Firstly, it improves washing efficiency by injecting all pumped wash water to dishes through washing arms, reducing the capacity of a washing pump and the amount of wash water needed during a washing operation. Secondly, it prevents wash water from being unnecessarily drained, reducing the consumption of wash water and power. Thirdly, it simplifies the wash water flow channel by omitting a sampling flow channel and a filth collection chamber used to filter wash water, reducing flow channel resistance, increasing wash water pumping pressure, and allowing a smaller capacity pump to be applied. Fourthly, it simplifies the structure of a drive unit by omitting a disposer and a screen, reducing the height of the drive unit and increasing inner space of a sump, increasing the capacity of a tub as the size of the drive unit is decreased. Fifthly, it minimizes the prevention of food waste from being left in the sump during a drainage operation and easily cleans the filtered-out food waste.

Problems solved by technology

First, the dish washer has a problem in that only some of the pumped wash water is injected through the washing arms, and therefore, the amount of wash water substantially injected to wash dishes is considerably reduced, whereby the washing efficiency of the dish washer is lowered. Also, the wash water is pumped in consideration of the amount of wash water circulating through the sampling flow channel, and therefore, it is needed to increase the capacity of the washing pump such that the amount of the injected wash water is sufficiently maintained.

Second, it is needed to consider the amount of wash water to be sufficiently injected to the dishes through the washing arms, the amount of wash water filtered while circulating through the sampling flow channel, and the amount of wash water injected from the lower washing arm to the filter so as to remove the food wastes from the filter. As a result, the amount of wash water substantially needed during the washing operation of the dish washer is considerably increased.

Third, the wash water pumped from the sump is directly introduced into the filth collection chamber through the sampling flow channel. As a result, a large amount of filth is introduced into the filth collection chamber, and therefore, the filter of the cover is clogged. Also, when the filter is clogged, large water pressure is applied to the filth collection chamber with the result that the wash water in the filth collection chamber is drained through the drainage hose, and therefore, the wash water is wasted. Furthermore, fatigue is accumulated in the filter, and therefore, the filter may be deformed.

Fourth, when the wash water is wasted as described above, it is needed to replenish wash water. Also, when a heating-washing operation is performed, the replenished wash water must be heated by the heater. Consequently, the consumption of wash water and power is unnecessarily increased.

Fifth, the sampling flow channel and the filth collection chamber are separately formed to filter the wash water. Consequently, the flow channel of the wash water is complicated. In addition, as the flow channel is complicated, wash water pumping pressure is considerably decreased. As a result, it is needed to use a washing pump having an increased capacity.

As a result, the structure of the drive unit is complicated, and the height of the drive unit is greatly increased.

Seventh, the flow channel of the dish washer is complicated, and food wastes are left in the filth collection chamber and the filter during the drainage operation of the dish washer.

As time passes, the leftover food wastes go rotten in the dish washer, thereby generating a bad smell.

Furthermore, when the food wastes are left in various flow channels, such as the filth collection chamber, it is very difficult to remove the food wastes.

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